Commit 0f2f89b6 authored by Daniel Vetter's avatar Daniel Vetter Committed by Linus Torvalds
Browse files

mm/dmapool: use might_alloc() 

Now that my little helper has landed, use it more.  On top of the existing
check this also uses lockdep through the fs_reclaim annotations.

Link: https://lkml.kernel.org/r/20210113135009.3606813-1-daniel.vetter@ffwll.ch


Signed-off-by: default avatarDaniel Vetter <daniel.vetter@intel.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 4be408ce

mm/dmapool.c

+2 −1
Original line number Diff line number Diff line
@@ -28,6 +28,7 @@ 
#include <linux/mutex.h>

#include <linux/poison.h>

#include <linux/sched.h>

#include <linux/sched/mm.h>

#include <linux/slab.h>

#include <linux/stat.h>

#include <linux/spinlock.h>
@@ -319,7 +320,7 @@ void *dma_pool_alloc(struct dma_pool *pool, gfp_t mem_flags, 
	size_t offset;

	void *retval;



	might_sleep_if(gfpflags_allow_blocking(mem_flags));

	might_alloc(mem_flags);



	spin_lock_irqsave(&pool->lock, flags);

	list_for_each_entry(page, &pool->page_list, page_list) {